Question: What was the instance of the so called "Black Death" on 1347?
Paraphrase: What were the symptoms of the "Black Death" in 1347?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q42005 p:P585 ?s . ?s ps:P585 ?x filter(contains(YEAR(?x),'1347')) . ?s pq:P31 ?value}